Sanding block



J y 1941- J. F. McADAMS 3,

SANDING BLOCK Filed Feb. 17, 1940 Patented July 8, 1941 ssrmmoamcn JamesF. McAdam, Worcester, Mala, assignmto ParkerWire Goods Company,Worcester a corporation of Massachusetts Application February 17, 1940,Serial No. 319,376

12 Claims.

The present invention relates to a sanding block adapted for releasablyholding a strip of sandpaper or a roll of sandpaper so that the abrasivesurface may be replaced. The principal feature of the invention is thecomparative simplicity of the device and its ease of assembly, making itinexpensive to manufacture and convenient to use. The block is adaptedto hold a reserve supply of sandpaper in the form of a roll so that theworn sanding surface may readily be replaced by shifting the sandpaperendwise on the device. The block may readily be formed from sheetmaterial, and when so formed, no machining or other operations arenecessary after the parts have been bent into the proper shape.

Other features and advantages of the invention will more fully appearfrom the following detailed description taken in connection with theaccompanying drawing in which- Fig. 1 is a side elevation of a sandingblock embodying the invention.

Fig. 2 is a sectional view along the line 2-2 of Fi 1.

Fig. 3 is a sectional view along the line 3-3 of F18. 2.

Fig. 4 is a perspective view of the top member. Fig. 5 is a perspectiveview of the bottom member.

The device as shown has a top or cover I and a base 2, these parts beingseparable from each other and resiliently held together to clamptherebetween a strip of sandpaper 3 of any suitable type, as forexample, the familiar abrasive coated cloth or paper. A pad 4,preferably of vsponge rubber or other correspondingly resilientmaterial, is positioned between the underside of the base and theoperative surface of the sand- The base 2, which in the arrangementshown, is formed from sheet material, has a flat central portion 5against which the pad 4 rests, the central portion having dependingflanges I at opposite edges to hold the pad in position. The portion 5may also have integral depending prongs l which project into and moresecurely .hold the pad 4 in place.

At the opposite ends of the central portion 5 of the base are upwardlyextending end mem-' bers 8, the upper extremities 9 of which are bentinwardly and downwardly to form inverted loops. The material of the baseis more or less resilient so that the end members 8 may be spread apartto receive therebetween the top, as will hereinend members I of the baseis an upwardly projecting flange it which is struck up from the centralportion of the base and which is substantially as wide as the centralportion. This flange acts to retain the unused end of the strip ofsandpaper, which has been coiled intoa roll ll of sandpaper, in positionbetween the top and the base and also serves to aid in retaining the topin proper position on the base, as will be pointed out.

The top, which is entirely separable from the base, may be readilyformed from sheet material and has .a substantially flat central portionI! with depending side flanges l3 spaced apart to correspondsubstantially to the width of the base and extending approximately intocoinciding relation with the opposite side edges of the base. Thus theupwardly extending flange ll engages the inner surfaces of these sideflanges and aids in supporting the top against tilting with respect tothe base. From the ends of the central portion of the top are downwardlyextending flanges II, the spacing of which is slightly less than thespacing of the upturned ends 8 of the base so that these end flangeswill be positioned between and in engagement with the inner sides of theinverted loops of the end a members of the base. The lower extremitiesof these end flanges it are turned inwardly toward each other as at itand are spaced from the central portion of the top so that by engagementwith the base they will retain the top in the desired position. The topis preferably formed from a somewhat resilient material sothat the 88end flanges thereon will be resilient, and when the top and base areassembled, will engage resiliently against the upwardly extending endmembers on the base for clamping the sandpaper strip therebetween.

40' The mode of assembly of the parts of the device will be readilyapparent. The sandpaper strip is coiled and placed within the base asshown, with the end of the strip extending around the base on theunderside of the pad and over the end member I remote from the roll. Thetop is then pressed downwardly with its depending end flanges locatedbetween the endmembers of the base for holding the sandpaper strip inposition.

When the operative surface of the sandpaper requires replacement, thetop is pulled away from the base and the strip is moved endwise until anunused portion of the strip underlies the pad and the top and base arethen reassembled.

. Although sandpaper has been referred to enafter appear. Between theupwardly extending tirely throughout. it will be apparent that emerycloth or em'ery paper, or. other abrasive strips, may be used equallywell and the term sandpaper is used generically.

I claim: 1. A sanding block, comprising a base having upturned roundedend members and depending flanges on opposite side edges of the base, are- 1 stri extending around the base and over saiduptumed end members,said hollow top member having depending substantially flat side flangescorresponding substantially'in spacing to the width of the base.

2. A sanding block, comprising a base having upturned rounded endmembers and depending flanges on opposite side edges of the base, aresilient block positioned between said flanges and projecting beyondthe edges thereof, and a hol-. low top member having depending endmembers engageable between the upturned end members of the base to clamptherebetween an abrasive stri extending around the base and over saidupturned end members, said hollow top member having substantially flatsides corresponding substantially in spacing to the width of the base,the lower edges of the depending end members of the hollow top memberbeing engageable with the base to hold said base and top member inpredetermined relation.

3. A sanding block, comprising a base having upturned rounded ends anddepending flanges on opposite side edges of the base, a resilient blockpositioned between said flanges and projecting beyond the edges thereof,said base having projecting tongues engageable with said block to retainit in position, said base also having an upwardly projecting flangebetween the ends thereof corresponding substantially in width to thebase, and a hollow top member having depending end members engagealblebetween the upturned end members of the base to clamp therebetween anabrasive strip extending around the base and over said upturned endmembers, certain of said end members being resilient, said hollow topmember also having substantially flat depending side flangescorresponding substantially in spacing to the width of the base andengageable with the opposite edges of the upwardly extending flange onthe base, the lower edges of the end members of the top being inturnedat their lower edges to rest against the base and to hold the base andtop in predetermined relation.

4. A sanding block, comprising a base member having. upturned endsaround which an abrasive strip is directed, and a top member movablewith respect to the base member and having resilient members engagingwith said upturned endsand clamping the strip therebetween, one of saidmembers having substantially. parallel side flanges and the other memberhaving a transverse flange adapted to extend between the side flanges,said side flanges and said transverse sive material is directed, and asheet metal top movable with respect to the base and having downwardlyextending end flange members engaging with'the upturned end members ofthe base for eng ing and holding the strip therebctween, at leastcertain of said end members being resilient, said base and top havingmeans thereon for holding said base and top in predetermined spacedrelation to each other when assembled, said means including tonguesonthe end flange members on the top for engagement with the base.

6. A sanding block, comprising a base having upturned end members, theupper ends of which have integral rebent and downwardly extending endflanges forming rounded portions around which a strip of abrasivematerial is directed, and a top movable with respect to the base andhaving downwardly extending end members engaging with the inner surfacesof the upturned end members for engaging and holding the strip, certainof said end members being resilient, said top also having depending sideflanges at opposite edges thereof which correspond in spacingsubstantially to the width of the base.

7. A sanding block, comprising a base having upturned ends around whichan abrasive strip is directed, and a top movable with respect to thebase and having resilient members engaging with said upturned ends andclamping the strip therebetween, said top also having depending sideflanges at opposite edges thereof, the spacing of these flangescorresponding substantially to the width of the base.

8. A sanding block, comprising a base having upturned ends around whichan abrasive strip is directed, anda top movable with respect to the baseand having resilient members engaging flange constituting means forholding said top relation to upper ends of which have integral rebentand downwardly extending end flanges forming rounded portions aroundwhich a strip of abrawith said upturned ends and clamping the striptherebetween, said top also having depending side flanges at oppositeedges thereof, the spacing of these flanges corresponding substantiallyto the width of thebase, the base having an upwardly projecting flangebetween the ends thereof for retaining a roll of abrasive material inpredetermined position within the space between the base and top.

9. A sanding block, comprising a base having upturned ends around whichan abrasive strip is directed, and a top movable with respect to thebase and having resilient members engaging with said upturned ends andclamping the strip therevbetween, said top also having depending sideflanges at opposite edges thereof, the spacing of these flangescorresponding substantially-to the width of the base, said base havingan upwardly extending flange between the ends thereof, the width ofwhich corresponds substantially to the spacing of the depending sideflanges of the top for engagement therewith.

10. A sanding block, comprising a base member having upturned endsaround which an abrasive strip is directed, and a top member movablewith respect to the base and having elements resiliently engaging withsaid upturned ends and clamping the strip therebetween, the top memberhaving lateral depending flanges, the lower edges of which extendapproximately into coinciding relation with the opposite side edges ofthe base.

11. A sanding block, comprising a base member having upturned endsaround which an abrasive strip is directed, and a top member movablewith respect to the A base and having elements resiliently engaging withsaid upturned ends and members.

12. A sanding block, comprising a base havingupwardlyextendingendandatopmemher having side flanges to extend betweenthe a roll 01 abrasive material.

end flanges oi the base member, said top member also having end flanges.the latter and the end flanges of the base member being cooperativelyshaped to provide for releasable interengagement to retain the twomembers together and to provide for the clamping of an abrasive stripbetween the flanges of said members, the base having an upwardlyextending transverse flange between the ends thereoi and extending, whenthe members are assembled, between the side flanges oi the top memberto, deflne a space for receiving JAMIE I". MGADAMS.

